Booster seat with adjustable fastening strap



FIG. 1 is a top perspective view showing my new design for a booster seat with adjustable fastening strap,

FIG. 2 is a bottom perspective view thereof,

FIG. 3 is a top view thereof,

FIG. 4 is a bottom view thereof,

FIG. 5 is a front view thereof,

FIG. 6 is a rear view thereof; and,

FIG. 7 is a right side view thereof, the left side being a mirror image thereof. 

CLAIM The ornamental design for a booster seat with adjustable fastening strap, as shown and described. 